Reverse, noreverse Channel Options
Channel-specific use of address reversal (
reverse channel option tells the MTA that addresses in messages enqueued to the channel should be checked against and possibly modified by address reversal (that is, modified by
reverse_url controlled LDAP lookups, or the address reversal database, or the
noreverse exempts addresses in messages queued to the channel from address reversal processing. The
reverse channel option is the default.
Note that, due to intended critical side-effects of
reverse_url LDAP lookups, side-effects that will not occur if the
noreverse channel option is used, typical Messaging Server sites should not use the
noreverse channel option.